Sash-fastener.



C. DE VOE.

SASH FASTENER.

APPLICATION HLED JUNE 16, 1914.

Patented June 1, 1915.

WITNESSES CHAUNGEY DE VOE, or new Yen's.

sasnrasrmrmi To all whom it'may concern Be it known that I, CHAUNCEY DE Von, a

4 citizen'of the United States, and a resident of the city of New' York, in the county of Bronx and State of New York, have invented certain new and useful Improvements in Sash-Fasteners, of which the following is a specification.

The present invention relatcs'to improvements in window sash holders, and more particularly to that form which is secured to the upper-rail of'the lower sash of the win (low and is adapted to bear or bind against some portion, 'for instance one of the stiles,

of the upper one. -'One 'of'the objects of the invention is to provide an i-mproved'and simple form of sash fastener which will lock the two sashes together at any desired relative position, so

that the window may he left open a suiii'cient 'g d-istance for ventilation either at the top or at the bottom, or at both,and

revent the lower sash from being pushed arther upwardor tlic top one from, being pulled down to a snfiieient ektent to enable a person to gain. access to the room or house through the window.

Another: object of thei'nvention is to pro vide a device of the character specified which serves to prevent the sashes or either of them mttling. A further object of the invention is to produce a sash lock having means which prevent the picking of the lock'by means of a blade or similar contrivance. A still further object of the invention is to provide a sash fastener that can lie manufactured on a commercial scale or in other words one which is not so diihcult to pro duce as to be beyond the neasonable cost of such an article.

\Vith these and other objects in View, which will more full appear as the nature of the invention is etter \inderstood, the

same. consists in the combination, arrange-- ment and construction of parts hereinafter fully described. pointed out in the appended claims and illustrated in the accompanying drawings, it bein understood that many changes may be ma e in the size and proportion of the several parts and details of construction within the scope of the appended claims without'departlng from the spirit or sacrificing any of the advantages of the invention.

One of the many possible embodiments of Specification of Letters iatent.

"re-rea ise June 1. 2915.

Animation tied .Yuite 16, I914. Qe'ril No. MEABxfi the invention iiii'strated in the accompanying drawings, in whieh:--

Figure 1 is a elevation of the proved fastenentho same being shown in a suitable position to the upper and lower sashes of a. Enclow. the latter being shown in sec on: i. h

is a similar view of the fastener and the fastener t shown in its 1106;" e position; Fig. 3 i I x O a section taxes on ii???) 34 or Fig. 1; and

Fig. 4 is a plan view of the fastener and the sash to which is attached.

Inthe drawings. the ripper sash of the window is represented at 10 and the lower sash at 11. To ti v top of the upper raii the lower sash is .nrcd by screws. or other wise, the base plate 22 of the fastener. W nch this base plate may be made integral or there maybe attached thereto in any suitable manner two parallel upwardly projecting frame portions or ears 13, in which is rotatably mounted a spindle A. To this spindle is rigidly secured, for instance by means of a pin 15, a locking piece or lever l6, that is formed with a cannsimped end l7, which is adapted to come into contact with the inner surface of the upper sasln. for instance with that of one oi its stiles, when said lever is in its operative position. The eccentricity of the cam-slmped end of the locking laser increases gradually from the l 18 oE-th e lever to npporn "a, ii the lower portion 2! of the (381213 oped and of said lever being: substantially decreased in thickness, thereby forming a spring-like tail which, when brought nto contact with the upper sash, takes a firm grip thereon and ciiectivelyprevents a motion oiisaid s ,h relative to the other one. One end of is spindle 1% projects l'ieyond onset the frame portions or ears and is provided'with a shoulder 21, against which iii adapted to bear a pawl 22, that is pivoted at 23 totho frame portions IE3. This pawl is made in the form of a hailcrank lever, its arm 52.

out edge acting as a handle by which the pawl is plate 12 is provided with an extension 28,

that is of substantially inverted V-shape in cross section, and projects over the plane 29 in which the two sashes of the window meet.

This extension prevents thus effectively the insertion of a blade-like instrument, and

ards thereby against lifting the locking ever 16 from outside by means of such instrument. From the extension 28 rise ears 30, in. which is mounted a roller 31, that is adapted to bear against the upper sash of the window, and serves to prevent the extension 28 from coming into contact with the upper sash.

The operation of this device is as follows: When the locking lever 16 is forced into contact with the upper sash of the window, its springy tail 20 engages with and binds against said sash. If it is attempted to raise'the lower sash, it is obvious that the friction between the springy tail 20 of the locking lever and the upper sash willcause a rotation of the locking lever in the direction of the arrow shown in Fig. 1 of the drawings, and will consequently force the said locking lever against the upper sash and bind the two sashes together in direct ratio to the upward pressure owing to the @n thekother band, should it be attempted to lower. the upper sash, the same movement of'the lockinglever will be produced. When it is desired to release the lock, the pawl 22 is disengaged from the shoulder 21 of the spindle 14, the locking lever rotated backward, and

the 141g "26 seated in'the recess 27' in said il fllfiv it isentirely impossible to raise 'plate of the device preventing the insertion of such instrument.

What I claim is :1 1. The combination with the upper and lower sashes of a window, of a locking lever fulcrumed to said lower sash, said lockin lever having a cam-shaped end adapted to bear against said upper sash, the lower portion of the cam-shaped end of said lever being substantially decreased in thickness, thereby forming a spring-like tail ending in a knife edge for causin resilient contact between said cam and sai upper sash.

2. The combination with the u per and lower sashes of a window, of a rame secured to said lower sash, a. spindle rotatably mounted in said frame, a lever rigidly secured to said spindle, said lever being provided with 'a locking cam adapted to bear against said uppcrsash, a' shoulder upon said spindle, said spindle being also provided with a recess, and a pawl having a lug fulcrumed to saidjframe, said lug being adapted to bear, at wil1, a ai'ns t said shoulder or to; be seated in sai "recess; for holding said cam in locking and unlocking positions, respectively, in relation to said'upper 

